The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Gray Code Encoder in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 78th error256 0 44 11ms 12 Apr 2025 78th GolfingSuccess 🇬🇷 0 44 9ms 8 May 2025 78th GolfingSuccess 🇬🇷 0 44 12ms 8 May 2025 78th Natanaelel 🇸🇪 0 44 10ms 8 May 2025 78th sean-niemann 🇺🇸 0 44 11ms 8 May 2025 78th edsrzf 🇳🇿 0 44 9ms 10 May 2025 78th 4atj 0 44 11ms 8 Jun 2025 78th lukegustafson 🇺🇸 0 44 12ms 16 Jun 2025 78th JOrE20 0 44 12ms 6 Dec 2025 78th voytxt 🇨🇿 0 44 41ms 6 Feb 2026 78th Steffan153 🇫🇮 0 44 28ms 19 Feb 2026 78th CaedenHarper 🇨🇦 0 44 12ms 2 days ago 78th fuzzylojik-golf 🇺🇸 0 44 12ms 28 hours ago 78th fuzzylojik-golf 🇺🇸 0 44 9ms 27 hours ago 78th Yax42 🇫🇷 0 44 12ms 12 hours ago 78th helbling 🇨🇭 0 44 12ms 10 hours ago 97th Andrey-Plotnikov 0 45 12ms 10 Jan 2025 97th saito-ta 🇯🇵 0 45 555ms 10 May 2025 97th GolfingSuccess 🇬🇷 0 45 79ms 14 May 2025 97th XenThe 🇬🇧 0 45 12ms 15 Jul 2025 97th smclaughlin-cf 0 45 12ms 14 Oct 2025 97th albanian-laundromat 0 45 13ms 3 days ago 103rd Shanethegamer 🇺🇸 0 46 377ms 26 Nov 2024 103rd kg583 🇺🇸 0 46 458ms 1 Dec 2024 103rd Shanethegamer 🇺🇸 0 46 527ms 10 Dec 2024 103rd GolfingSuccess 🇬🇷 0 46 458ms 30 Dec 2024 103rd pardouin 🇫🇷 0 46 416ms 24 Feb 2025 103rd Shanethegamer 🇺🇸 0 46 8ms 30 Apr 2025 103rd GolfingSuccess 🇬🇷 0 46 7ms 8 May 2025 103rd rucin93 🇵🇱 0 46 8ms 11 May 2025 103rd Steffan153 🇫🇮 0 46 376ms 26 days ago 103rd fuzzylojik-golf 🇺🇸 0 46 409ms 31 hours ago 103rd edsrzf 🇳🇿 0 46 7ms 30 hours ago 114th lifthrasiir 🇰🇷 0 47 416ms 11 Dec 2024 114th emgordon154 0 47 404ms 9 May 2025 114th LukeBridges 🇬🇧 0 47 12ms 16 hours ago 117th antimon2 🇯🇵 0 50 288ms 16 Dec 2024 117th Shanethegamer 🇺🇸 0 50 315ms 1 Feb 2025 117th ovs-code 🇩🇪 0 50 448ms 23 Feb 2025 117th CaedenHarper 🇨🇦 0 50 733ms 3 days ago 117th Steffan153 🇫🇮 0 50 776ms 3 days ago 117th edsrzf 🇳🇿 0 50 872ms 3 days ago 117th GolfingSuccess 🇬🇷 0 50 765ms 2 days ago 124th DialFrost 🇸🇬 0 51 269ms 24 Feb 2025 124th Shanethegamer 🇺🇸 0 51 5ms 30 Apr 2025 124th GolfingSuccess 🇬🇷 0 51 157ms 8 May 2025 124th rucin93 🇵🇱 0 51 159ms 8 May 2025 124th Shanethegamer 🇺🇸 0 51 150ms 8 May 2025 124th sean-niemann 🇺🇸 0 51 150ms 9 May 2025 124th DialFrost 🇸🇬 0 51 302ms 8 Sep 2025 124th HumanoidCPU 0 51 394ms 8 hours ago 124th albanian-laundromat 0 51 5ms 104 mins ago 133rd DialFrost 🇸🇬 0 52 474ms 17 Feb 2025 133rd CaedenHarper 🇨🇦 0 52 530ms 3 days ago 135th dokutan 0 53 426ms 15 Aug 2025 135th MeWhenI 🇻🇦 0 53 393ms 21 Nov 2025 135th albanian-laundromat 0 53 467ms 15 Jan 2026 135th AlephSquirrel 0 53 383ms 2 days ago 139th Shanethegamer 🇺🇸 0 54 69ms 12 Dec 2024 139th error256 0 54 66ms 12 Apr 2025 139th albanian-laundromat 0 54 779ms 15 Jan 2026 139th GolfingSuccess 🇬🇷 0 54 71ms 2 days ago 139th dokutan 0 54 800ms 12 hours ago 144th albanian-laundromat 0 55 39ms 3 days ago 145th hallvabo 🇳🇴 0 56 15ms 29 Nov 2024 145th kg583 🇺🇸 0 56 16ms 1 Dec 2024 145th CornerMercury 🇬🇧 0 56 15ms 3 Dec 2024 145th ndren 0 56 16ms 3 Dec 2024 145th lifthrasiir 🇰🇷 0 56 37ms 11 Dec 2024 145th GolfingSuccess 🇬🇷 0 56 16ms 30 Dec 2024 145th khvdm 0 56 16ms 12 Jan 2025 145th pardouin 🇫🇷 0 56 16ms 24 Feb 2025 145th Shanethegamer 🇺🇸 0 56 66ms 30 Apr 2025 145th GolfingSuccess 🇬🇷 0 56 70ms 8 May 2025 145th sean-niemann 🇺🇸 0 56 67ms 8 May 2025 145th sean-niemann 🇺🇸 0 56 16ms 8 May 2025 145th emgordon154 0 56 16ms 9 May 2025 145th dokutan 0 56 16ms 18 Aug 2025 145th albanian-laundromat 0 56 16ms 2 Dec 2025 145th DialFrost 🇸🇬 0 56 2,628ms 16 Dec 2025 First Prev 81–160 of 360 Next Last